Zobrazeno 1 - 10
of 21
pro vyhledávání: '"M. D. Royal"'
Publikováno v:
Journal of Dairy Science. 93:2239-2243
The purpose of this study was to estimate and discuss the genetic variation, heritability, and effects of nongenetic factors on the ability of Holstein-Friesian cows to produce an immune response by producing IgG antibodies to Ostertagia ostertagi .
Publikováno v:
Journal of Dairy Science. 93:1743-1748
Activity of stearoyl-CoA desaturase (SCD) in the mammary gland is important for determining the relative proportions of saturated and monounsaturated fatty acids in milk and the concentration of the conjugated linoleic acid isomer rumenic acid (RA; c
Publikováno v:
The Veterinary record. 174(12)
Complete or partial failure of passive transfer (FPT) of immunoglobulins in the neonatal calf can result in an increased susceptibility to disease, a higher risk of mortality and decreased growth rates (Robison and others 1988, Tyler and others 1998,
Publikováno v:
Animal Science. 72:539-546
The objective of the present study was to evaluate the efficacy of a prostaglandin F2α(PGF2α) and progesterone (P4) treatment in initiating oestrus and ovulation post partum (PP) in Holstein-Friesian cows. Using four herds, the treatment protocol c
Autor:
T. C. Hodgman, M. D. Royal, K. Derecka, Anthony P.F. Flint, Shakil Ahmad, John Woolliams, N. Hastings
Publikováno v:
Animal Genetics. 41:329-331
Summary Seven sequence variants (SVs) have been identified in exon 1 and in the promoter region upstream of the bovine gonadotrophin releasing hormone (GnRH) receptor gene, at nucleotides g.−331A>G, g.−108T>C, g.+206G>A, g.+260C>T, g.+341C>T, g.+
Publikováno v:
Animal Science. 70:487-501
Reproductive performance of 714 Holstein Friesian dairy cows was monitored between October 1995 and June 1998 using thrice weekly milk progesterone determinations. Defined endocrine parameters such as interval topost-partumcommencement of luteal acti
Publikováno v:
Journal of Genome Science and Technology. 3:15-17
Publikováno v:
Animal, Vol 2, Iss 8, Pp 1101-1103 (2008)
Dairy cattle are an integral part of agriculture worldwide, providing many products in addition to milk for the human population. The efficient production of these products is of utmost importance and high reproductive performance is absolutely cruci
Publikováno v:
Animal genetics. 41(3)
Seven sequence variants (SVs) have been identified in exon 1 and in the promoter region upstream of the bovine gonadotrophin releasing hormone (GnRH) receptor gene, at nucleotides g.-331AG, g.-108TC, g.+206GA, g.+260CT, g.+341CT, g.+383CT and g.+410C
Publikováno v:
Scopus-Elsevier
A total of 220 cows and heifers were treated with 3 mg/kg ketoprofen immediately after calving and 24 hours later, and 227 were left untreated as controls. The treated animals tended to have a lower incidence of retained fetal membranes and were 1.7